Added Warden container IP to snapshot

The host IP in db/instances.json is not very useful because any packets sent from the application get translated to the container IP as soon as the packet leaves the container.

For auditing purposes, we need to log when TCP connections are made to certain network zones. This is simple to do using iptables. The problem is correlating which application sent the packet. This can easily be accomplished using db/instances.json if the instances.json had the container IP.